20-04-2014, 08:15 PM
(17-04-2014, 08:15 PM)dorothy.pipet Wrote: Assuming I'm signalling a layout with Track Circuit Block working and Track Circuits (not Axle Counters), what would be a reasonable maximum TC length to assume in the exam (for plain line sections, long signal spacing).
I'm thinking somewhere between 600m and 1000m - any advice please?
Not sure why you would be worrying about the physical length of the electrical sections of the individual track circuits for module 2. What PJW writes is all true for the physical constraints (any a typical thing to consider in detail for mod 5), but for the detail shown in module two, you are showing the length of the functional section. Yes, on a real scheme plan, you would show xx/1, xx/2 etc, but for the module 2 paper, I am not sure that anything other than a note saying that "long" sections may be made up of multi section tracks will gain you much credit. To be hones, I have never asked that question of anyone involved. Does anyone have direct experience of that point?
Peter